The largest man-made lake in the U.S. is Lake Mead, created by Hoover Dam.
The poison arrow frogs of South and Central America are the most poisonous animals in the world.
A new born blue whale measures 20-26 feet (6.0 - 7.9 meters) long and weighs up to 6,614 pounds (3003 kg).
The first coast-to-coast telephone line was established in 1914.
The Virginia opossum has a gestation period of only 12-13 days.
The Stegosaurus dinosaur measured up to 30 feet (9.1 meters) long but had a brain the size of a walnut.
The largest meteorite crater in the world is in Winslow, Arizona. It is 4,150 feet across and 150 feet deep.
The human eye blinks an average of 4,200,000 times a year.
Skylab, the first American space station, fell to the earth in thousands of pieces in 1979. Thankfully most over the ocean.
It takes approximately 12 hours for food to entirely digest.
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